"The Nation's Gun Show" features more than a thousand tables full of guns, knives and ammunition. A record number of people are expected out this weekend

"Obama has probably been the best gun salesman that I've had in the 34 years that I've been in business," said Jerry Cochran, the owner of Trader Jerry's.

Cochran said the demand for semiautomatic rifles is now being stoked by memories of stiff gun regulations under President Bill Clinton's administration.

"This is a Colt AR15," Cochran pointed out. "It was banned in 1994 until 2004, because it had a threaded barrel, a bayonet lug, a collapsible stock and a magazine capacity that could hold more than 20 rounds."